2015/02/18 by Yuanyuan Zhao, Zhao, Yuanyuan, Markus Grassl +14
Computer Science · Physics and Astronomy · #FOS: Physical sciences #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Physics (quant-ph) #Quantum-Dot Cellular Automata #quant-ph
paper · pdf · doi:10.48550/arxiv.1502.05095
9 pages, 5 figures, 4 tables. Comments are welcome v2: updated typo in author's name
openalex publication_date 2015/02/18 · arxiv created 2016/07/12 · arxiv updated 2016/07/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Entanglement polytopes result in finitely many types of entanglement that can be detected by only measuring single-particle spectra. With high probability, however, the local spectra lie in more than one polytope, hence providing no information about the entanglement type. To overcome this problem, we propose to additionally use local filters. We experimentally demonstrate the detection of entanglement polytopes in a four-qubit system. Using local filters we can distinguish the entanglement type of states with the same single particle spectra, but which belong to different polytopes.